The common factors of 15, 45, and 75 are the numbers that can evenly divide all three of these numbers. To find the common factors, you can first determine the prime factors of each number: 15 = 3 x 5, 45 = 3 x 3 x 5, and 75 = 3 x 5 x 5. The common factors are the numbers that appear in the prime factorization of all three numbers, which in this case are 3 and 5.
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The factors of 15 are:
1, 3, 5, 15
The factors of 45 are:
1, 3, 5, 9, 15, 45
The factors of 75 are:
1, 3, 5, 15, 25, 75
The common factors are:
1, 3, 5, 15
Factors of 30... 1,2,3,6,6,10,15,30
Factors of 45... 1,3,4,9,15,45
Factors of 75... 1,3,5,15,25,75
Therefore - the common factors are... 1,3 & 15
The greatest common denominator, like the greatest common multiple, is infinite.
The factors of 15 are: 1, 3, 5, 15The factors of 45 are: 1, 3, 5, 9, 15, 45The common factors are: 1, 3, 5, 15The Greatest Common Factor (GCF) is: 15
The greatest common factor of the numbers 45, 75 and 90 is 15.
The factors of 75 are:1, 3, 5, 15, 25, 75The factors of 90 are:1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90The factors of 105 are:1, 3, 5, 7, 15, 21, 35, 105The common factors are:1, 3, 5, 15
Factors of 45: 1, 3, 5, 9, 15, 45Factors of 375: 1, 3, 5, 15, 25, 75, 125, 375GCF (45, 375) = 15